Home / 11,143.68-15,377.80-6,664.79

Finding the Fourth Proportional to 11,143.68, 15,377.80 and 6,664.79

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Solution

The fourth proportional to 11,143.68, 15,377.80 and 6,664.79 is: 9,197.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.68 : 15,377.80 = 6,664.79 : x
  2. Step 2: Convert to fraction form
    11,143.68/15,377.80 = 6,664.79/x
  3. Step 3: Cross multiply
    11,143.68x = 15,377.80 × 6,664.79
  4. Step 4: Simplify right side
    11,143.68x = 102,489,807.66
  5. Step 5: Solve for x
    x = 102,489,807.66/11,143.68
  6. Step 6: Final answer
    x = 9,197.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.